[INFO] cloning repository https://github.com/MrPyva/useless_shit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MrPyva/useless_shit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrPyva%2Fuseless_shit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrPyva%2Fuseless_shit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ebc5378590abd7c3924b1fb789fecbed5d124b4
[INFO] testing MrPyva/useless_shit against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMrPyva%2Fuseless_shit" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MrPyva/useless_shit on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MrPyva/useless_shit
[INFO] finished tweaking git repo https://github.com/MrPyva/useless_shit
[INFO] tweaked toml for git repo https://github.com/MrPyva/useless_shit written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/MrPyva/useless_shit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cab2f7a497a3a554a32f2e1eb9645aa22bfee823fe4e7161493b91dd37aa9c38
[INFO] running `Command { std: "docker" "start" "-a" "cab2f7a497a3a554a32f2e1eb9645aa22bfee823fe4e7161493b91dd37aa9c38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab2f7a497a3a554a32f2e1eb9645aa22bfee823fe4e7161493b91dd37aa9c38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab2f7a497a3a554a32f2e1eb9645aa22bfee823fe4e7161493b91dd37aa9c38", kill_on_drop: false }`
[INFO] [stdout] cab2f7a497a3a554a32f2e1eb9645aa22bfee823fe4e7161493b91dd37aa9c38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a26195d8bb837d9ccc19dca1995daa6d2e2047c2c87fa3c28810d1e94d2a011
[INFO] running `Command { std: "docker" "start" "-a" "6a26195d8bb837d9ccc19dca1995daa6d2e2047c2c87fa3c28810d1e94d2a011", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapsize v0.4.2
[INFO] [stderr]    Compiling useless_shit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `park`
[INFO] [stdout]  --> src/thread_pooling.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{Thread, park};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::Args`
[INFO] [stdout]  --> src/thread_pooling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::Args;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Err(e) => panic!("Error")
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/thread_pooling.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |                     let mut executor = &mut vec_lock[index];
[INFO] [stdout]    |                         ----^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/thread_pooling.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let mut vec = vec.clone();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `into_bytes`
[INFO] [stdout]  --> src/bytes.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn into_bytes<T>(val: T) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bytes`
[INFO] [stdout]   --> src/bytes.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn bytes<T>(val: &T) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Executors`
[INFO] [stdout]  --> src/thread_pooling.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Executors {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ExecutorThread`
[INFO] [stdout]  --> src/thread_pooling.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ExecutorThread {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread_pooling.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(thread_size: u16) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/thread_pooling.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn execute<F>(&self, execute: F) -> Result<Thread, ExecuteError>
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ExecuteError`
[INFO] [stdout]   --> src/thread_pooling.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub enum ExecuteError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]  --> src/enum_dyn_alloc.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if enumval.offset() < 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.96s
[INFO] running `Command { std: "docker" "inspect" "6a26195d8bb837d9ccc19dca1995daa6d2e2047c2c87fa3c28810d1e94d2a011", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a26195d8bb837d9ccc19dca1995daa6d2e2047c2c87fa3c28810d1e94d2a011", kill_on_drop: false }`
[INFO] [stdout] 6a26195d8bb837d9ccc19dca1995daa6d2e2047c2c87fa3c28810d1e94d2a011
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56ab3f581fceeba97c4a520bdf85f18659d5788ed60b29aa8caab57a2fa1dc07
[INFO] running `Command { std: "docker" "start" "-a" "56ab3f581fceeba97c4a520bdf85f18659d5788ed60b29aa8caab57a2fa1dc07", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling useless_shit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `park`
[INFO] [stdout]  --> src/thread_pooling.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::thread::{Thread, park};
[INFO] [stdout]   |                           ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env::Args`
[INFO] [stdout]  --> src/thread_pooling.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::env::Args;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]  --> src/main.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |         Err(e) => panic!("Error")
[INFO] [stdout]   |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/thread_pooling.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |                     let mut executor = &mut vec_lock[index];
[INFO] [stdout]    |                         ----^^^^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/thread_pooling.rs:21:17
[INFO] [stdout]    |
[INFO] [stdout] 21 |             let mut vec = vec.clone();
[INFO] [stdout]    |                 ----^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     unsafe {
[INFO] [stdout]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `into_bytes`
[INFO] [stdout]  --> src/bytes.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn into_bytes<T>(val: T) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bytes`
[INFO] [stdout]   --> src/bytes.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub fn bytes<T>(val: &T) -> Vec<u8> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Executors`
[INFO] [stdout]  --> src/thread_pooling.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Executors {
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ExecutorThread`
[INFO] [stdout]  --> src/thread_pooling.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct ExecutorThread {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/thread_pooling.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn new(thread_size: u16) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `execute`
[INFO] [stdout]   --> src/thread_pooling.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn execute<F>(&self, execute: F) -> Result<Thread, ExecuteError>
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ExecuteError`
[INFO] [stdout]   --> src/thread_pooling.rs:66:10
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub enum ExecuteError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: comparison is useless due to type limits
[INFO] [stdout]  --> src/enum_dyn_alloc.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 7 |     if enumval.offset() < 0 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "56ab3f581fceeba97c4a520bdf85f18659d5788ed60b29aa8caab57a2fa1dc07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56ab3f581fceeba97c4a520bdf85f18659d5788ed60b29aa8caab57a2fa1dc07", kill_on_drop: false }`
[INFO] [stdout] 56ab3f581fceeba97c4a520bdf85f18659d5788ed60b29aa8caab57a2fa1dc07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 03b44a7d287ad304c866004973c21ff5908096be18bf265714fb29eb032fa043
[INFO] running `Command { std: "docker" "start" "-a" "03b44a7d287ad304c866004973c21ff5908096be18bf265714fb29eb032fa043", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `park`
[INFO] [stderr]  --> src/thread_pooling.rs:1:27
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::thread::{Thread, park};
[INFO] [stderr]   |                           ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env::Args`
[INFO] [stderr]  --> src/thread_pooling.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env::Args;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]  --> src/main.rs:9:13
[INFO] [stderr]   |
[INFO] [stderr] 9 |         Err(e) => panic!("Error")
[INFO] [stderr]   |             ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/thread_pooling.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |                     let mut executor = &mut vec_lock[index];
[INFO] [stderr]    |                         ----^^^^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/thread_pooling.rs:21:17
[INFO] [stderr]    |
[INFO] [stderr] 21 |             let mut vec = vec.clone();
[INFO] [stderr]    |                 ----^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     unsafe {
[INFO] [stderr]    |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `into_bytes`
[INFO] [stderr]  --> src/bytes.rs:3:8
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub fn into_bytes<T>(val: T) -> Vec<u8> {
[INFO] [stderr]   |        ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bytes`
[INFO] [stderr]   --> src/bytes.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 | pub fn bytes<T>(val: &T) -> Vec<u8> {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Executors`
[INFO] [stderr]  --> src/thread_pooling.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub struct Executors {
[INFO] [stderr]   |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ExecutorThread`
[INFO] [stderr]  --> src/thread_pooling.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | struct ExecutorThread {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/thread_pooling.rs:16:12
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn new(thread_size: u16) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `execute`
[INFO] [stderr]   --> src/thread_pooling.rs:43:12
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn execute<F>(&self, execute: F) -> Result<Thread, ExecuteError>
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `ExecuteError`
[INFO] [stderr]   --> src/thread_pooling.rs:66:10
[INFO] [stderr]    |
[INFO] [stderr] 66 | pub enum ExecuteError {
[INFO] [stderr]    |          ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]  --> src/enum_dyn_alloc.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 |     if enumval.offset() < 0 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 14 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/useless_shit-a5585f35dd32efa2)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "03b44a7d287ad304c866004973c21ff5908096be18bf265714fb29eb032fa043", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03b44a7d287ad304c866004973c21ff5908096be18bf265714fb29eb032fa043", kill_on_drop: false }`
[INFO] [stdout] 03b44a7d287ad304c866004973c21ff5908096be18bf265714fb29eb032fa043